Paper-feeder.



G. B. McCORMACK.

PAPER FEEDER. APPLICATION FILED OCT- 31, 1916. I 4

Patented Sept. 18, 19

2 SHEETSSHEET l.

INVENTOR W12NEssEs= 3 Ammnn's G. B. McCORMACK.

PAPER FEEDER.

APPLICATION FILED OCT. 3|, 191s.

LMOAGQ, PatentedSept. 18,1917.

WITNESSES: INVENTOR A'nroRxEYs GEORGE B. MOCORMACK, OF JERSEY CITY, NEW JERSEY.

PAPER-FEEDER.

Specification of Letters Patent.

Patented Sept. 18, 1911'.

Application filed October 31, 1916. Serial No. 128,698.

To all "whom it may concern:

Be it known that I, GEORGE B. MCCOR- MACK, a citizen of the United States, residing at Jersey City, in the county of Hudson and State of New Jersey, have invented new and useful Improvements in Paper- Feeders, of which the following is a specification.

This invention relates to a paper feeder.

One of the objects of the present invention is to provide a simple. easily operated automatic paper feeder which is adapted to be attached to practically any standard form of printing press or like machine now in use;

Another object of the invention is to provide means for blowing hot air through the sheets to dry and separate same and also to expel any static. electricity which often exists under certain weather conditions.

Further, objects ,will hereinafter appear.

The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings in which:

Figure l is a side elevation of the paper feeder. V

Fig. 2 is a plan view of same. Fig. 3 is a front end view. Referring to the drawings in detail, A

' indicates in general a main frame consisting of four T shaped connected standards 2 and 3, between which is supported a cylinder 4. Mounted in the cylinder is a plunger 5 on'the upper end of which is secured a table 6 whichis adapted to receive and support a stack ofv pa er such as indicated at 7. Secured to the lower side of the table is a pair of brackets 8 and 9 which are slotted attheir outer ends to straddle the T shaped standards 2 and 3, in this manintermediate shaft 17 to which power is transmitted from the driving shaft 14 by means of gears 18. Secured on the for ward end of the shaft 14 is a disk 19 on the outer face of which projects a crank pin 20. J ournaled in the frame below the r table 6 centrally of the standards 2 and 3, is a shaft 21 on the outer end of which is secured a disk 22 which is also provided mit the two shafts to be driven in unison.

Secured on the shaft 21 is a pair of cams 25 which are adapted to engage with rollers 26 secured on the lower side of the table 6. Each cam is ofiset as indicated at 27 to permit the cams to slowly raise the table and plunger with relation to the cylinder 4 and also to permit the plunger and table to drop with considerable speed when the offset port-ions of the cams are reached. The lower end of the cylinder'is connected with the heating coil 11 and this is in turn connected with a flexible tube 28 which in turn connects with a nozzle 29 secured on the table adjacent the forward end of the paper stack 7.

Mounted on thedischarging end of the heating coil is a check valve 30, and mount ed in the lower end of the plunger is a check valve The slow upward movement of the plunger and table transmitted through the cams 25 causes the upper check valve 31 to open to permit the cylinder to charge with air. This valve however closes when the plunger and table is permitted to settle, and thus causes the air to be discharged through the heating coil, the check valve 30, the flexible tube 28, and the nozzle 29, directly against the end of the paper. stack 7. The drop of the plunger and table being limited or cushioned entirely by the escaping air from the cylinder while the up movement is limited by the piston engaging the, cylinder top. The air in its passage through the coil 11 is heated to any desirable degree by regulating the flame of the burner 12 and as this air is intermittently forced endwise into the paper stack 7 it can readily be seen that the individual sheets willbe thoroughly dried, separated and heated to such an extent that static electricity is practically eliminated. Paper unless heated, is often troublesome, and the individual sheets often have a tendency to adhere, due to the static electricity which is prevalent during certain atmospheric conditions. This condition is entirely overcome by the present heating arrangement. Pivotally mounted upon a shaft 33 journaled in the upper ends of the bracket arms 13, is a frame 34 in the outer end of which is journaled a pair of composition rollers 35 and a pair of cleaning rollers 36.

The shaft 33 is continuously driven from the intermediate shaft 17- by means of a sprocket chain drive 37, and the composition rollers 35 are similarly driven from shaft 33 by a sprocket chain drive 38. Mounted forward of the composition rollers 35, is a pair of intermediate stripping rollers 39 which are driven in unison with the composition rollers by means of the sprocket chain drive 40, and journaled in the outer lower end of the frame 34 is a roller 41, which carries a conveyer belt 42.

This conveyer belt passes over a similar roller secured upon the shaft 33, and is provided for the purpose of carrying away the individual sheets delivered thereto by means of the composition rollers 35 and the intermediate stripping rollers 39. The individual sheets carried up by the conveyor belt 42 are discharged from the roller on the shaft 33, being received by a secondary conveyer 43 or any other suitable mechanism. frame 34 as previously described, is pivotally mounted on the shaft 33, and as considerable weight is imposed thereon by the different rollers and chains, it can readily be'seen that it becomes necessary to counterweigh the frame to prevent the composition rollers 35 from exerting too much pressure upon the paper stack. v

A pair of extension arms 44 provided with adjustable counter-weights 45 have therefore been employed. These weights permit an equal distribution of the weight imposed upon the frame 34, in fact such a nicety of balance maybe secured that any pressure desired may be imposed on the composition rollers 35 when these engage the-topmost sheet of the stack 7.

The pivotal movement of the frame 34 is limited in a downward direction by a bracket and a stop pin 51, while the upward movement. is entirely unrestricted. The operation of the feeder as a wh0le will be as follows Power transmitted to shaft 14 through the belt 15 is in turn transmitted to the intermediate shaft 17 and shaft 33 through the beveled gears 18 and the sprocket chain drive 37. Power is simultaneously transmitted tothe. shaft .21 through the crank pins 20 and 23, and the connecting link 24. Reciprocal movement is in this manner transmitted to the plunger 5 and the table 6 once during each revolution on the shafts 14 and 21, in other words it can be seen that the table 6 supporting the paper stack 7 The.

is raised up-into engagement with the composition rollers 35 once during each revolution, and is again permitted to settle to expel the air admitted to the cylinder 4 to permit this to be dischargedthrough the nozzle 29 into the stack as previously 'described. The raising of the paper stack into engagement with the composition roller 35 a which is continuously revolved, causes this conveyer 43 from where it may be delivered to a printing press or any other machine or device desired.

The rollers 60 which are mounted above the conveyer 42, are merely provided for the purpose of preventing the individual sheets from flying 0d the conveyer where the sheets are delivered at considerable speed. The upward movement of the table is limited entirely by the lift of the cams 25. It is. therefore always uniform and will consequently raise the frame 34 about the pivotal mounting 33 a variable distance depending entirely upon thepaper stack 7. The timing is however such that only one sheet can be removed during each engagement. The lowering of the stack when the cams 25 pass out of engagement with the rollers 26, permits the stack 7, together with the table and plunger, to drop with considerable speed. The frame 34 in this manner follows until its downward movement is limited .by the pin 51 and the stop bracket 50 while the continued downward movement of the parts mentioned causes the air previously admitted to the cylinder 4 to be expelled through the heating coil and the nozzle 29.

The upward movement of the table is always such that a whole stack of paper may be fed from top to bottom without necessitating any adjustment or 'care on the part of the attendant. The swinging movement of the frame 34 being of course greater when the paper stack is high and comparatively smaller as the stack decreases.

The cleaning rollers 36 may be constructed of felt, or any other suitable material. and are only employed for the purpose of re moving any paper lint, or like material, which might have a tendency to adhere to the face of the composition rollers 35 while these are feeding. The composition rollers are in this manner automatically cleaned without further attention or care.

The feeder as a whole is entirely automatic, and is so simple in construction that comparatively little care or skill as far as the operation is concerned, is required.

facturer may dictate.

I wish it understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the appended claims, and that I do not wish to limit myself'to the specific design or construction here shown.

Having thus described my invention, what I claim and desire to secure by Letters Patcut is I 1. An automatic paper feeder comprising a table adapted to support a stack of paper, a revolving vertically movable roller mounted above the stack, and means for successively raising and lowering the table upon feed of each sheet to bring the topmost sheet of the stack into engagement with the roller to raise the latter. 1

2. An automatic paper feeder comprising a table adapted to support a stack of paper,

a pivotally mounted frame, a revolving roller j ournaled in the free end of the frame above the paper stack to partake of the frame movements, and means for raising and lowering the table to bring the topmost sheet of the stackintovand out of engagement with the roller.

3. An automatic paper feeder comprising a table adapted 'to support a stack of paper a pivotally mounted frame, a plurallty of revolving feed rollers journaled in the free end of the frame, a plurality of revolving stripping rollers journaled in the frame adjacent the feeder rollers and intermediate of same, and means for raising and lowering the table to bring the topmostsheet in the stack into engagement with the feedingrollers.

4% An automatic paper feeder comprising a table adapted to support a stack of paper, a pivotally mounted frame, a plurality of revolving feed rollers journaled in the free end of the frame, a plurality of revolving stripping rollers journaled in the frame adjacent the feeder rollers and intermediate of same, means for raising and lowering the table to bring the topmost sheet in the stack into engagement with the feeding rollers, and a conveyer belt carried by thepivotally mounted frame, operating in unison with feeding and stripping rollers to discharge each sheet as it is removed from the stack by the feeding rollers.

5. An automatic paper feeder comprising a table adapted to support a stack of paper, a pivotally mounted frame, a revolving roller ournaled in the free end of the flange above the paper stack, and means for raising and lowering the table to bring the topmost sheet of the stack .into engagement with the roller, means for limiting the downward swinging movement of the free end of the pivotally mounted frame, and means swinging movement of the free end of the pivotally mounted, frame, and means for limiting both the upward and downward movement of the table.

7 An automatic paper feeder comprising a table adapted to support a stack of paper, a pivotally mounted frame, a plurality of revolving feed rollers journaled in the free end of the frame, a plurality of revolving stripping rollers j ournaled in the frame adjacent the feeder rollers and intermediate of same means for raising and lowering the table to bring the topmost sheet in the stack into engagement with the feeding rollers, a conveyer belt carried, by the pivotally mounted frame, operating in unison with feeding and stripping rollers to discharge each sheet as it is removed from the stack by the feeding rollers, means for limiting the downward'swinging movement'of the free end of the pivotally mounted frame, and means for limiting both the upward and downward movement of the table.

8. An automatic paper feeder comprising a table adapted to support a stack of paper, a revolving roller mounted above the stack, means for raising and lowering the table to bring the topmost sheet of the stack into engagement with the roller, a nozzle mounted adjacent one end of the paper stack, and means operated by the table movements for intermittently forcing hot air through the nozzle 'against the end of the stack.

9. An automatic paper feeder comprising a table adapted to support a stack of paper, a pivotally mounted frame, a revolving roller journaledin the free end of the flange above the paper stack, means for raisingv and'lowering the table to bring the topmost sheet of the stack into engagement with the roller, means for limiting the downward swinging movement of the free end of the pivotally mounted frame, means for limiting both the upward and downward movement of the table, a nozzle mounted adjacent one end of the paper stack, and means for intermittently forc ing hotair through the nozzle against the end of the stack. 1

10..An automatic paper feeder comprising a frame, a feeding roller, a table reciprocally mounted in the frame adapted to raise a stack of paper into and out of I adapted to admit and expel air when the table and plunger reciprocates, a nozzle mounted adjacent the table, and a connection, formed between said'nozzle and the cylinder adapted to convey the expelled air from the cylinder to the nozzle.

11. An automatic paper feeder comprising a frame, a feeding roller, :1 table reciprocally mounted in the frame adapted to raise a stack of paper into and out. of engagement with the feeding roller, a cylinder mounted below the table, a plunger secured to the table extending into the cylinder valves connected with the cylinder adapted to admit and expel air when the table and plunger reciprocates, a nozzle mounted adjacent the table, a connection formedbetween said nozzle andthe cylinder adapted to. convey the expelled air from the cylinder to the nozzle, and means for heating the air before it discharges through the nozzle.

12. In an automatic paper feeder, feeding means, means for supporting a stack of sheets, means for reciprocating the supporting means, and means for directing a heated air blast against the edges of the stack only during the idling movement of the supporting means.

13. In combination with sheet feeding means, means for supporting astack of sheets, means to move the supporting means into sheet feeding position, and means actuated by the supporting means to direct an air blast against the stack.

14. In combination with sheet feeding means, means for supporting a stack of sheets,means to reciprocate the supporting means to cause same to move into and out of sheet feeding position, and means actuated by the idling stroke of the supporting means to direct an air blast against the direct air against an edge of the stack on the table, means to heat the air, and means to force the heated air through'said directing means upon the idle stroke of the table.

17 In combination with sheet feeding means and a table, means engageable with the table to raise same and disengageable therefrom to permit the table to-drop, air compression means operable by the dropping movement of the table, and means to direct the compressed air to the sheets on the table. 3

18. In combination with sheet feeding means, a table, an air compressor, a heating coil connected to, the air compressor discharge, means to heat the coil, and means to discharge the air from the coil onto the stack on the table.

19. In combination with ingmeans, swingable sheet feeding means, means to intermittently operate the sheet receiving means to bring same successively 'into and out of engagement with the feedsheet receivmeans to successively move the table into and out of engagement with the sheet feeding means upon each sheet feeding operation.

'21. In combination with a sheet receiving table, swinging sheet feeding means engageable with the stack on the table, means to restrict the extent of downward movement of the feeding means, and means to move the table into and out of sheet feeding position so as to swing and thereby alternately raise and lower said sheet feeding means by contact .of the table with said sheet feeding means.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

GEORGE B MCCORMACK. Witnesses:

CHAS. A. MIRREAU, C. E. FELTIS. 

